package 解释器模式;

//  终结表达式抽象类，由于该终结表达式需要解释多个运算符号，同时用来构建抽象语法树：
public abstract class SymbolNode implements Node {
	protected Node left;
	protected Node right;

	public SymbolNode(Node left, Node right) {
		this.left = left;
		this.right = right;
	}
}
